A journal bearing, usually a full journal bearing.
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CUTTING WEAR
Comes about when hard surface asperities or hard particles that have embedded themselves into a soft surface and plough grooves into the opposing harder surface, e.g., a journal.
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JOURNAL BEARING
A sliding type of bearing having either rotating or oscillatory motion and in conjunction with which a journal operates. In a full or sleeve type journal bearing, the bearing surface is 360° in extent. In a partial bearing, the bearing surface is less than 360° in extent, i.e., 150°, 120°, etc.
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JOURNAL
That part of a shaft or axle that rotates or angularly oscillates in or against a bearing or about which a bearing rotates or angularly oscillates.
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FULL JOURNAL BEARING
A journal bearing that surrounds the journal by a full 360°.
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OIL RING
A loose ring, the inner surface of which rides a shaft or journal and dips into a reservoir of lubricant from which it carries the lubricant to the top of a bearing by its rotation with the shaft.
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THRUST-RADIAL BEARING
This unit has the ends of the babbitt bearing extended radially over the end of the shell. Collars on the rotor face these thrust pads, and the journal is supported in the bearing between the thrust collars.
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CLEARANCE BEARING
A journal bearing in which the radius of the bearing surface is greater than the radius of the journal surface.
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ABRASIVE WEARAbrasive wear is caused by hard particles such as ash deposits, metallic particles or catalytic fines from the cracking process of the fuel oil. These hard grains wear down the surface of cylinder liners and rings by continuous ploughing and scratching. |
LOG-BOOK
A journal that records the daily positions of the vessel, winds, weather, courses, distances and noteworthy occurrences.
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JOC-JOURNAL OF COMMERCE
Journal of Commerce-A Wall Street Journal type of weekly news magazine that covers the Transportation business in the USA.
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